Resilient bottom for chairs, couches, etc.



J. KRONHEIM 1,775,821

RESILIENT BOTTOM FOR C HAIRS, COUCHES, ETC

Filed May 15. 1929 2 Shuts-Sheet 2 Sept. 16, 1930.

m m H m M Y m M w E a 3 n m A 5, Z 9 fi M 0 a V f QWLZ 7 M 1 I ml I J M, p 4 a ff FIG? ATTORNEY Patented Sept. 16, 1930 UNITED STATES JACOB KRONHEIM, OF CLEVELAND, OHIO RESILIENT BOTTOM FOR CHAIRS, COUCHES, ETC.

Applicatiog filed May 15,

My invention relates to upholstered furniture, and more particularly to upholstered spring bottoms for chairs, couches, and the like. Thus, in manufacturing such bottoms 5 generally the common practice is to mount a plural number of coiled wire springs upon strips of webbing nailed to an open wooden frame, and to enclose and cover the springs with woven goods tacked to the frame. Before applying the upholstering goods the springs are usually tied together with suitable cords which are tacked to the frame to maintain the springs in a compressed state and to limit expansion thereof. One of my objects is to provide a stronger and more resilient spring bottom than heretofore, and another object is to construct the same in the particular way herein shown and described whereby the manufacture of the bottom and its instal- 20 lation in a chair or couch frame will be greatly expedited and cheapened as compared with known practices.

In the accompanying drawings, Fig. 1 is a plan or top view of my improved spring bottom mounted within a chair frame, and Fig. 2 is a sectional view vertically through the structure shown in Fig. 1. Fig. 3 is an enlarged sectional view and elevation of the portion of the spring bottom shown in the foregoing figures, and Fig. 4. is an enlarged sectional view in perspective of one corner portion of aframe and a part of the flexible sub-frame therein, the springs being omitted.

Fig. 5 is a perspective View of a portion of the sub-frame, and Fig. 6 is a perspective view'of one of theclips detached from the sub-frame; #Fig. 7 is ape'rspect'ive showing aportiony fthe sub-frame anchone of the clipsf secure'd-together.

8*1s" perspective view of fit" modified attached to the l or a "frame.

t tt conform "to miner ls b'e v x v v p El clip, but is pre'ferablyfiormed nje'arer "one angular "end than the other 1929. vSerial No. 363,309.

such as duck or canvas having its border edges hemmed or seamed and reinforced by a wire border frame 3. A layer of loosely woven or open mesh material 4 is superposed upon the heavier woven sheet 2 and the edges thereof secured Within the hem or seam 5. Portions of this seam may be cut away at intervals to expose the border wire 3 and facilitate the attachment of base member B to wooden frame A, by means of a series of short helical suspension springs 6, and foldable metal straps 7. I The helical suspension springs 6 are hooked at their outlet ends to perforated ears 8 which are stamped outwardly from U-shaped metal clips 9 which are adapted to embrace wooden frame A, to which they are rigidly secured by nails 10 driven through the perforated angular arms 11 of clip 9, see Fig. 4. Preferably, the helical suspension springs 6 and their clips 9 are screwed only on three sides of the open rectangular frame A, and the fourth side of said frame is equipped with other clips 12 of U-shape having slots 14 within their vertical connectiong portions 15. These are also nailed to the wooden frame, and permit a loose swivel or hinge connection to be made for the base member B using the metal strap 7, as follows:

Thus, referring to Figs. 5 to 7, inclusive, the metal strap 7 has T-shaped extremities, 16, and the strap is folded around the border wire 3 to bring these extremities into facial contact, whereupon the extremities may be inserted through the slots 14 in clip 12, when clip 12 is placedina parallel position opposite border wire 3., The clip is then turned at rightanglesto the border wire, asshownin Fig. 7, and the extremities 16 off-connecting strap 7 aie'then bent at right angles against 90 the inside faefof theconnecting portion of the clip. The clip is then nailed to'wooden frame A thereby fastening'basemember 1B a l -strange r'p'o whet-hep "a' Tlie resili thereto hinged con iiection, Moreover slot14 the up pe mits a c rtain degree of independ'entinovement of the connecting strap vertically in respect, to? the clip. Slot" 14- is 'not' l'oca'ted exactly'at "the middle of the? This'arrangement permits the clip to be fastenedin two difierent positions upon frame A, that is to say, the slot 14 may be located either near the bottom edge or the top edge of the frame rail, thus permitting the basemem'ber B to be fitted at different elevations within the frame when the spring bottom is being installed.

Prior to installing the'structure within the wooden frame, a plural number of coiled wire compression springs S are seated in predetermined spaced relations upon the closely woven base member 2. These springs are formed with an open base loop 17 which is adapted to be threaded through the open meshes in the coarsely woven piece of fabric 4, thereby aflixing the position of the spring-upon base member 13.

' Accordingly, when the springs S and base member B are fitted within frame A, the said springs are seated in an upright position within the frame and extend a substantial distance above the top thereof. These springs are then tied together at their upper ends by cords C and to facilitate attachment of these cords to the wooden frame without the use of tacks or nails, a corrugated wire W is secured to the top of the wooden frame longitudinally of each side rail thereof, and the cords C are introduced or threaded between the cortions, the operator secures the cord to the springs and threads the loose ends underneath wire W and returns to fasten the cord again to other s rings. The series of loops which are provi ed by the use of corrugated wire gives'the operator considerable latitude in selecting the place of attachment of the cord thereto, and the tying operation is considerably expedited and made more convenient than under old practices.

The modified form of clip shown in Fig. 8 has an angular arm 11' channeled to receive and hold wire W,,thereby permitting direct clamping of the wire to the rails of frame A without using grooves in the rail.

What I claim, is: v

1 A resilient bottom for chairs, couches, etc., including a frame, coiled springs and a supporting base member therefor, suspended within said frame, and slotted suspension clips having foldable connecting straps af- -fixed thereto and to said base.

2. A resilient bottom for chairs, couches,

etc., comprising an open frame, clips secured springs attached thereto, and coiled springs and a supporting base member therefor suspended within said frame by said springs, including clips fastened to one rail of said frame, having slots, and foldable pieces having bent extremities connected with said slotted clips and the borders of said supporting member.

3. A resilient bottom for chairs, couches, etc., comprising an open frame, coiled compression springs and a flexible base member therefor suspended within said frame, said base member having a wire border edge, and means for suspending said base member within said frame including clips secured to said frame having slots, and connecting straps folded around the border wire of said base member having enlarged extremities engaged with said clips.

4. A resilient bottom for chairs, couches, etc., comprising a wooden frame, coiled springs and a flexible base member therefor suspended within said frame, and means for suspending said base member, including clips secured to said frame having slots, and connecting straps having T-shaped extremities folded together and projected through the slots in said clips, and said base member having a border wire in hinged connection with said straps.

,5. A resilient bottom for chairs, couches, etc., comprising a wooden frame, coiled springs supported vertically within said frame, an elongated sinuous member fastened horizontally to said frame contiguous to the upper edge thereof to provide a continuous row of loop holes lengthwise of the frame, and a net work of cords tying the upper ends of said springs at intervals to said sinuous member.

6. A resilient bottom for chairs, couches. etc., comprising a frame having border rails, a group of coiled wire springs supported vertically within said frame, a corrugated wire'secured rigidly to the border rails of said frame, thereby providing a multiplicity of loop holes at closely spaced intervals lengthwise of said rails, and means for securing the upper ends of the springs flexibly at spaced intervals to said corrugated wire.

7. .A resilient bottom for chairs, couches, etc., comprising a wooden frame having a sinuous member extending continuously therearound parallel with the upper edges thereof, metal clips for fastening said mem-- bar at intervals to said-frame, compression springs and a base member therefor connected to said clips, and means tying said springs under tension to said sinuous member.

8. A resilient bottom for chairs, couches, etc., comprising a rectangular frame having a corrugated wire mounted thereon parallel to its upper edges, angular clamping members for said wire aflixed to said frame, compression springs having a flexible supporting base connected to and suspended from said clamping member, and means tying the 'sprin s to said corrugated wire.

9. i resilient bottom for chairs,couches, etc., comprising a grooved frame, a corrugated wire confinedwithin the groove in said frame, a resilient spring bottom suspended within said frame, and means for tying said spring bottom to said corrugated wire. 10. In a resilient bottom for a chair, couch or the like, a rectangular frame, angular members made of flat strips of metal affixed at intervals to all four side rails of said frame, a flexible base member stretched with- 1 in said frame having hinge connections with the angular members aflixed to one side rail of said frame, the angular members on the other sides of said frame having projecting portions stamped therefrom, helical tension springs connecting said base member with said projecting portions, compression springs seated vertically upon said base member, and means connecting the upper ends of said compression springs to all four side rails of said frame to maintain the said springs in a compressed state.

11. In a resilient bottom for a chair, couch or the like, a rectangular frame having a tie member extending continuously around all I I four sides thereof, metal pieces fastened to said frame clamping said tie member to said frame, a flexible supporting member connected to and suspended yieldingly from said metal pieces, compression springs seated upon said supporting member, and cords connecting said springs at spaced intervals to said tie member.

12. In a resilient bottom for a chair, couch or the like, a rectangular frame, a corrugated 40 member mounted upon and extending continuously around said frame, channeled clamping members for said corrugated member afiixed to the sides of said frame, a flexible bottom member connected to said clamp- 5 ing members, coiled compression springs secured vertically upon said bottom member, and means connecting the upper ends of said springs to said corrugated member.

In testimony whereof I hereby aflix my signature.

- JACOB KRONHEIM. 

